Determination of the Stability and Control Characteristics of a Tailless All-Wing Airplane Model with Sweepback in the Langley Free-Flight Tunnel

Abstract

Force and flight tests were performance on an all-wing model with windmilling propellers. Tests were conducted with deflected and retracted flaps, with and without auxiliary vertical tail surfaces, and with different centers of gravity and trim coefficients. Results indicate serious reduction of stick-fixed longitudinal stability because of wing-tip stalling at high lift coefficient. Directional stability without vertical tail is undesirably low. Low effective dihedral should be maintained. Elevator and rudder control system is satisfactory.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1945
Accession Number
ADA800615

Entities

People

  • Charles L. Seacord Jr.
  • John P. Campbell

Organizations

  • Langley Research Center

Tags

DTIC Thesaurus Topics

  • Aerodynamic Configurations
  • Aircrafts
  • Airfoils
  • Airframes
  • Airplanes
  • Autorotation
  • Coefficients
  • Control Systems
  • Directional
  • Flight
  • Free Flight
  • High Lift
  • Low Drag Airfoils
  • Propellers
  • Reynolds Number
  • Stalling
  • Wing Tips

Readers

  • Aerodynamics/Aeronautics.